Batch Query Steam Keys for activation on SteamWorks

SteamQueryBatchKey.js

// 1. GO TO SteamWorks, into the Query CD Key page, here: https://partner.steamgames.com/querycdkey/
// 2. Fill in your keys below:
// 3. Go to DevTools, Console, and paste all of this here there!
// 4. Report will be printed to the console.

keys = `
0ZQR4-N0H7K-AEJ77
D05V5-P47AP-4ET3Q
GGJZ5-ZN0BR-F74C5
FWZP4-2IXHB-GYV3A
`

var keylist = keys.split("\n");

keylist.forEach(key => {
	if(key.length<17) return;
	function reqListener () {
	  let body = this.responseText;
	  let result = body.split('<h2>Activation Details</h2>')[1];
		  if (!result && !err) {
			console.log('Error quering CD Key ' + key);
		  } 
		  result = result.split('</table>')[0];
		  result = result.match(/<td>.*<\/td>/g);
		  result = result.map(function (line) {
			return line.replace(/<[^>]*>/g, '');
		  });
		  let line = [key, (result[0] === 'Activated') ? '"' + result[1] + '"' : result[0]].join('\t');
		  console.log(line);
	}
	var oReq = new XMLHttpRequest();
	oReq.addEventListener("load", reqListener);
	oReq.open("GET", "https://partner.steamgames.com/querycdkey/cdkey?cdkey="+key+"&method=Query");
	oReq.send();
});

Chrome does rate-limit too, I managed to batch-check 500 keys with no issue. I want to keep this implementation as CLEAN as possible, so people can read what it do and not fear of self-xss attack towards them - after all, pasting untrusted code in the browser console is real concern nowadays, so i at least tried to make my implementation clear what it does :)

Appreciate this.

I was about to code a better snippet based on this, but decided that this one is good enough.
Thanks.

The only issue is that it won't find <h2>Activation Details</h2> if your language is set to anything other than English.

I was about to code a better snippet based on this, but decided that this one is good enough. Thanks.

The only issue is that it won't find <h2>Activation Details</h2> if your language is set to anything other than English.

Just change the text to whatever your language is, or add ?hl=en to the query string. This code is written in such a way that a human being should be able to quickly verify what the script is all about and you have to edit the script anyways to feed in your keys.

Do I need to be signed up as a developer and have a paid developer account? Will this work with any key or just keys for my own games?

Yes, and the developer account must have access to the game you are querying too.